For those really cold days ...
Whisk to combine the milk, water, maple syrup (or coconut sugar), and vanilla extract in a small saucepan.
Place on a medium heat and heat until hot but not boiling. At the same time, melt the chocolate in a double boiler.
Off the heat, whisk the melted chocolate into the milk mixture.
Pour into a mug and top with marshmallows.
ENJOY this decadent treat!